Drya Thornne bug

Hey I ran into the same issue. Once i beat the boss i had no cutscene, but had the cross guard stance. I quickly went to rest on the meditation point in the middle of the room, and the second I hit “rest” he respawned and i only had the cross guard stance. I fought the boss again only for it to stay at 1 HP and not die. I tried leaving and backtracking to the last meditation point, dying, resetting the game, and even sneaking over to the door BD can slice. The BD door let me take a shortcut back to the Mantis. So i even left the planet and came back, still nothing. its a shame too because i missed out on a cutscene and no longer have access to the cross guard stance. Can anyone find a fix? Ive been loving this game so far, but this bug is awful and soft locked my game until i was able to sneak over to the BD sliceable door.

PS: I play on Xbox Series X. I uploaded a small game clip to my profile too of the bug/glitch.